Russian 2-on-2 MMA ("Hip Show")

So apparently there are 2-on-2 mma matches in russia, and the stage looks like this.

This is a screen-cap from YouTube. The fighter with black shorts is alone because his partner got tapped out. Immediately after this the fighter in black started running for his life, was dragged to the ground from the top of the building on the Right and submitted with a RNC/ankle lock combo.

I'm not quite sure what the rules are, the only thing I've got managed to find/google translate from their website http://hip-show.com/ru/ is

"Hip Show - This is a team on a three-level arena fights, instead of the usual plane of the ring. This is a 2 on 2 battles in Powerplays, as hard contact without limitation technique strikes, throws and locks!"

It's the craziest competition format I've ever seen, and I'll probably end up watching way more of this than I have the time for

I thought that was pretty entertaining as a spectacle and certainly adrenaline pumping, Could it work as a serious sport? Who knows but you could all ways add all of Holy Moment's extras and you have a great Saturday night game show, Would beat Gladiators

2-v-2 has 3 rounds of 2 minutes each, with 90 second breaks in-between.
Joint locks and chokes are prohibited in the first and second rounds.
If one fighter is eliminated then the fight continues 2-v-1.
2-v-1 lasts only 1 round of 1 minute.
Rules other than these are based on the "current rules of MMA", so presumably Unified Rules.

KOing or tapping both fighters on the other team is a win.
Surviving the full minute of 2-v-1 without being tapped or KOed is a win.

At the end there's a judges' decision based on points. If it's a tie then they fight another round of 3 minutes.
Points are awarded thusly:
Any throw on the floor - 1 point
Any headkick - 1 point
Pinning another fighter for 10 seconds - 1 point
Submission (with presumably a tapout) - 3 points
Knockdown - 3 points
KO - 5 points

Looking at the list of prohibited techniques, you're not allowed to elbow to the head, and I don't think kneebars, heel hooks, neck cranks or triangle chokes are allowed. I'm a bit unsure of their terminology.
Other than that the rules seem pretty standard.

Yeah, it's kinda vague.
What it actually prohibits is "crossing one's legs on the neck...or other actions which may cause damage to the neck." I'm struggling to think what that might refer to. Is it a high guard? Or are they just concerned about the possibility of fighters who've learned to break necks with their legs, KGB-style?